- #1
rwooduk
- 762
- 59
Hi,
I've calibrated our pH meter using 4.01 and 7.01 buffer solution, but I'm not sure if the probe has dried out at some point. So I want to check the calibration, I have some HCl > 37% that I can use. Just a quick question, since pH is on a log scale so I have to make solutions every ten unit?
i.e. 1ml HCl + 100mL DI water
1ml HCL + 1000mL DI water
1ml HCL + 10000mL DI water
For large volumes of water would my pH meter even detect a change? Please could someone suggest a realistic range of diluted HCl values with which to check the calibration is correct or is the above correct?
Thanks for any advice
I've calibrated our pH meter using 4.01 and 7.01 buffer solution, but I'm not sure if the probe has dried out at some point. So I want to check the calibration, I have some HCl > 37% that I can use. Just a quick question, since pH is on a log scale so I have to make solutions every ten unit?
i.e. 1ml HCl + 100mL DI water
1ml HCL + 1000mL DI water
1ml HCL + 10000mL DI water
For large volumes of water would my pH meter even detect a change? Please could someone suggest a realistic range of diluted HCl values with which to check the calibration is correct or is the above correct?
Thanks for any advice